Computer devices randomly get disconnected












0














I seem to have a strange issue with my PC. The devices which are connected to it are randomly getting disconnected, only to be connected again in like a second.



I typically observe the issue when I connect a usb 3.0 drive to the pc and start copying large ammounts of data (direction of data transfer does not matter).
When the copying happens I look at the transfer speeds to/from the usb drive and see that it hovers about 70MB/s then drops to 0MB/s every few seconds.



During those periods when I observe 0MB/s copying speed, sometimes this usb drive disappears from the system only to be reconnected in a second. Sometimes I also see my keyboard and mouse lose power and disconnect also. Even bluetooth mouse sometimes get disconnected during this period (it reconnects in a few seconds, but I cannot move mouse during this periods).



Another issue which happens pretty randomly is when I reboot I see that one of my harddrives is missing (I can sometimes see it as not formatted properly), but when I reboot again the drive reappears. I think this was caused by faulty hard drive, but I've already replaced all of them during few months and the issue is still here.
I've also noticed that hard drive is disappearing more frequently if I connect additional sata hard drive to the PC.



I'm starting to think this is either a faulty motherboard or a psu (will try replacing the psu first).
I'm asking here, because maybe someone had a similar problem and could point out a possibly faulty component which could cause this, or point out what else could I try.



What was done:
Check disk was run on all drives (there were sometimes errors caused by sudden disconnect of a drive, but were repaired, when run again there were no errors).
Hard drives which were thought to be faulty were replaced.
Computer was cleaned inside.



Computer specification:
Cpu: Intel Core i5 6600k @3.5 (stock speed, not overclocked),
Ram: Corsair DDR4 2x4GB 2400MHz, CL14, Vengeance
Mobo: Gigabyte GA-Z170-D3H rev. 1.0 (bios F5)
PSU: CoreXStream OCZ-CXS500W
Drive 1 (system): Samsung 850Evo 250GB
Drive 2: Hitachi 2TB (HUA723020ALA641)
Drive 3: Seagate 250GB (ST3250620NS)
Usb hard drive: Seagate expansion 1.5TB - when copying to/from this drive the errors happen more frequently, but the drive itself is perfectly stable on another pc
Hub: Chinese usb 3.0 hub (problem happens with this disconnected as well)
Keyboard: Genesis R33 usb
Mouse: A4tech XL-747H usb



Is there anything I can do to narrow down which component is faulty?
Best regards and thanks in advance










share|improve this question



























    0














    I seem to have a strange issue with my PC. The devices which are connected to it are randomly getting disconnected, only to be connected again in like a second.



    I typically observe the issue when I connect a usb 3.0 drive to the pc and start copying large ammounts of data (direction of data transfer does not matter).
    When the copying happens I look at the transfer speeds to/from the usb drive and see that it hovers about 70MB/s then drops to 0MB/s every few seconds.



    During those periods when I observe 0MB/s copying speed, sometimes this usb drive disappears from the system only to be reconnected in a second. Sometimes I also see my keyboard and mouse lose power and disconnect also. Even bluetooth mouse sometimes get disconnected during this period (it reconnects in a few seconds, but I cannot move mouse during this periods).



    Another issue which happens pretty randomly is when I reboot I see that one of my harddrives is missing (I can sometimes see it as not formatted properly), but when I reboot again the drive reappears. I think this was caused by faulty hard drive, but I've already replaced all of them during few months and the issue is still here.
    I've also noticed that hard drive is disappearing more frequently if I connect additional sata hard drive to the PC.



    I'm starting to think this is either a faulty motherboard or a psu (will try replacing the psu first).
    I'm asking here, because maybe someone had a similar problem and could point out a possibly faulty component which could cause this, or point out what else could I try.



    What was done:
    Check disk was run on all drives (there were sometimes errors caused by sudden disconnect of a drive, but were repaired, when run again there were no errors).
    Hard drives which were thought to be faulty were replaced.
    Computer was cleaned inside.



    Computer specification:
    Cpu: Intel Core i5 6600k @3.5 (stock speed, not overclocked),
    Ram: Corsair DDR4 2x4GB 2400MHz, CL14, Vengeance
    Mobo: Gigabyte GA-Z170-D3H rev. 1.0 (bios F5)
    PSU: CoreXStream OCZ-CXS500W
    Drive 1 (system): Samsung 850Evo 250GB
    Drive 2: Hitachi 2TB (HUA723020ALA641)
    Drive 3: Seagate 250GB (ST3250620NS)
    Usb hard drive: Seagate expansion 1.5TB - when copying to/from this drive the errors happen more frequently, but the drive itself is perfectly stable on another pc
    Hub: Chinese usb 3.0 hub (problem happens with this disconnected as well)
    Keyboard: Genesis R33 usb
    Mouse: A4tech XL-747H usb



    Is there anything I can do to narrow down which component is faulty?
    Best regards and thanks in advance










    share|improve this question

























      0












      0








      0







      I seem to have a strange issue with my PC. The devices which are connected to it are randomly getting disconnected, only to be connected again in like a second.



      I typically observe the issue when I connect a usb 3.0 drive to the pc and start copying large ammounts of data (direction of data transfer does not matter).
      When the copying happens I look at the transfer speeds to/from the usb drive and see that it hovers about 70MB/s then drops to 0MB/s every few seconds.



      During those periods when I observe 0MB/s copying speed, sometimes this usb drive disappears from the system only to be reconnected in a second. Sometimes I also see my keyboard and mouse lose power and disconnect also. Even bluetooth mouse sometimes get disconnected during this period (it reconnects in a few seconds, but I cannot move mouse during this periods).



      Another issue which happens pretty randomly is when I reboot I see that one of my harddrives is missing (I can sometimes see it as not formatted properly), but when I reboot again the drive reappears. I think this was caused by faulty hard drive, but I've already replaced all of them during few months and the issue is still here.
      I've also noticed that hard drive is disappearing more frequently if I connect additional sata hard drive to the PC.



      I'm starting to think this is either a faulty motherboard or a psu (will try replacing the psu first).
      I'm asking here, because maybe someone had a similar problem and could point out a possibly faulty component which could cause this, or point out what else could I try.



      What was done:
      Check disk was run on all drives (there were sometimes errors caused by sudden disconnect of a drive, but were repaired, when run again there were no errors).
      Hard drives which were thought to be faulty were replaced.
      Computer was cleaned inside.



      Computer specification:
      Cpu: Intel Core i5 6600k @3.5 (stock speed, not overclocked),
      Ram: Corsair DDR4 2x4GB 2400MHz, CL14, Vengeance
      Mobo: Gigabyte GA-Z170-D3H rev. 1.0 (bios F5)
      PSU: CoreXStream OCZ-CXS500W
      Drive 1 (system): Samsung 850Evo 250GB
      Drive 2: Hitachi 2TB (HUA723020ALA641)
      Drive 3: Seagate 250GB (ST3250620NS)
      Usb hard drive: Seagate expansion 1.5TB - when copying to/from this drive the errors happen more frequently, but the drive itself is perfectly stable on another pc
      Hub: Chinese usb 3.0 hub (problem happens with this disconnected as well)
      Keyboard: Genesis R33 usb
      Mouse: A4tech XL-747H usb



      Is there anything I can do to narrow down which component is faulty?
      Best regards and thanks in advance










      share|improve this question













      I seem to have a strange issue with my PC. The devices which are connected to it are randomly getting disconnected, only to be connected again in like a second.



      I typically observe the issue when I connect a usb 3.0 drive to the pc and start copying large ammounts of data (direction of data transfer does not matter).
      When the copying happens I look at the transfer speeds to/from the usb drive and see that it hovers about 70MB/s then drops to 0MB/s every few seconds.



      During those periods when I observe 0MB/s copying speed, sometimes this usb drive disappears from the system only to be reconnected in a second. Sometimes I also see my keyboard and mouse lose power and disconnect also. Even bluetooth mouse sometimes get disconnected during this period (it reconnects in a few seconds, but I cannot move mouse during this periods).



      Another issue which happens pretty randomly is when I reboot I see that one of my harddrives is missing (I can sometimes see it as not formatted properly), but when I reboot again the drive reappears. I think this was caused by faulty hard drive, but I've already replaced all of them during few months and the issue is still here.
      I've also noticed that hard drive is disappearing more frequently if I connect additional sata hard drive to the PC.



      I'm starting to think this is either a faulty motherboard or a psu (will try replacing the psu first).
      I'm asking here, because maybe someone had a similar problem and could point out a possibly faulty component which could cause this, or point out what else could I try.



      What was done:
      Check disk was run on all drives (there were sometimes errors caused by sudden disconnect of a drive, but were repaired, when run again there were no errors).
      Hard drives which were thought to be faulty were replaced.
      Computer was cleaned inside.



      Computer specification:
      Cpu: Intel Core i5 6600k @3.5 (stock speed, not overclocked),
      Ram: Corsair DDR4 2x4GB 2400MHz, CL14, Vengeance
      Mobo: Gigabyte GA-Z170-D3H rev. 1.0 (bios F5)
      PSU: CoreXStream OCZ-CXS500W
      Drive 1 (system): Samsung 850Evo 250GB
      Drive 2: Hitachi 2TB (HUA723020ALA641)
      Drive 3: Seagate 250GB (ST3250620NS)
      Usb hard drive: Seagate expansion 1.5TB - when copying to/from this drive the errors happen more frequently, but the drive itself is perfectly stable on another pc
      Hub: Chinese usb 3.0 hub (problem happens with this disconnected as well)
      Keyboard: Genesis R33 usb
      Mouse: A4tech XL-747H usb



      Is there anything I can do to narrow down which component is faulty?
      Best regards and thanks in advance







      motherboard power-supply hardware-failure






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Aug 19 at 8:25









      Mikaka

      1




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          2 Answers
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          0














          All the cases I saw with the similar problem were lack of power supplied to the external drive. So, if your external box doesn't have it's own power supply then USB is not providing enough power.
          Take note that connecting USB 3.0 device consuming more than 500 mA is a bad idea bcoz USB 2.0 port can provide max 500 mA.






          share|improve this answer





















          • Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
            – Mikaka
            Aug 29 at 18:26












          • @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
            – Hardoman
            Aug 29 at 19:59



















          0














          Just in case anyone finds this in the future and has similar problem.



          I think it is fine now.
          I decided to take the risk and updated the bios of the mobo.



          I had F5 bios before, and now have F22f and I don't see this problem anymore.
          I'm running for 3 weeks on it and it seems to be fine.






          share|improve this answer





















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            2 Answers
            2






            active

            oldest

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            2 Answers
            2






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

            votes









            0














            All the cases I saw with the similar problem were lack of power supplied to the external drive. So, if your external box doesn't have it's own power supply then USB is not providing enough power.
            Take note that connecting USB 3.0 device consuming more than 500 mA is a bad idea bcoz USB 2.0 port can provide max 500 mA.






            share|improve this answer





















            • Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
              – Mikaka
              Aug 29 at 18:26












            • @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
              – Hardoman
              Aug 29 at 19:59
















            0














            All the cases I saw with the similar problem were lack of power supplied to the external drive. So, if your external box doesn't have it's own power supply then USB is not providing enough power.
            Take note that connecting USB 3.0 device consuming more than 500 mA is a bad idea bcoz USB 2.0 port can provide max 500 mA.






            share|improve this answer





















            • Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
              – Mikaka
              Aug 29 at 18:26












            • @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
              – Hardoman
              Aug 29 at 19:59














            0












            0








            0






            All the cases I saw with the similar problem were lack of power supplied to the external drive. So, if your external box doesn't have it's own power supply then USB is not providing enough power.
            Take note that connecting USB 3.0 device consuming more than 500 mA is a bad idea bcoz USB 2.0 port can provide max 500 mA.






            share|improve this answer












            All the cases I saw with the similar problem were lack of power supplied to the external drive. So, if your external box doesn't have it's own power supply then USB is not providing enough power.
            Take note that connecting USB 3.0 device consuming more than 500 mA is a bad idea bcoz USB 2.0 port can provide max 500 mA.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Aug 26 at 1:52









            Hardoman

            75339




            75339












            • Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
              – Mikaka
              Aug 29 at 18:26












            • @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
              – Hardoman
              Aug 29 at 19:59


















            • Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
              – Mikaka
              Aug 29 at 18:26












            • @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
              – Hardoman
              Aug 29 at 19:59
















            Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
            – Mikaka
            Aug 29 at 18:26






            Hi, I've bought a new PSU (xfxforce.com/en-us/products/ts-series-bronze-full-wired/…), and situation is improved. I still see problem with transfer speeds but now I only see them when copying to USB drive, not from it. However no other devices get disconnected now. I don't see this problem when I'm copying data to usb 3.0 pendrive, so maybe something else is wrong with the usb drive itself.
            – Mikaka
            Aug 29 at 18:26














            @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
            – Hardoman
            Aug 29 at 19:59




            @Mikaka from what you say it' still power issue. This specific device USB drive is consuming too much power, more than MB can provide. It was improved by the new PSU, but not ideally coz MB has it's own limitations. I believe that your external drive doesn't have it's own power supply? if so, that's the root cause.
            – Hardoman
            Aug 29 at 19:59













            0














            Just in case anyone finds this in the future and has similar problem.



            I think it is fine now.
            I decided to take the risk and updated the bios of the mobo.



            I had F5 bios before, and now have F22f and I don't see this problem anymore.
            I'm running for 3 weeks on it and it seems to be fine.






            share|improve this answer


























              0














              Just in case anyone finds this in the future and has similar problem.



              I think it is fine now.
              I decided to take the risk and updated the bios of the mobo.



              I had F5 bios before, and now have F22f and I don't see this problem anymore.
              I'm running for 3 weeks on it and it seems to be fine.






              share|improve this answer
























                0












                0








                0






                Just in case anyone finds this in the future and has similar problem.



                I think it is fine now.
                I decided to take the risk and updated the bios of the mobo.



                I had F5 bios before, and now have F22f and I don't see this problem anymore.
                I'm running for 3 weeks on it and it seems to be fine.






                share|improve this answer












                Just in case anyone finds this in the future and has similar problem.



                I think it is fine now.
                I decided to take the risk and updated the bios of the mobo.



                I had F5 bios before, and now have F22f and I don't see this problem anymore.
                I'm running for 3 weeks on it and it seems to be fine.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Dec 1 at 10:00









                Mikaka

                1




                1






























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